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The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her
Lu, Hongpeng1,2; Zhang, Liyun1,2; Han, Xianming L.3; Pi, Qingfeng1,2; Wang, Daimei1,2
Source PublicationNEW ASTRONOMY
2016-10-01
Volume48Pages:58-65
DOI10.1016/j.newast.2016.04.006
Indexed BySCI
KeywordStars:Binaries:Eclipsing Stars:Individual V1044 Her Stars Period Variation
Abstract

We present new CCD photometric observations of V1044 Her obtained on May 22, 23 and 24, 2015. From our data, we derived five new light curve minimum times. Combining our new results with previously available CCD light minimum times, we derived an updated ephemeris and discovered that the period of this binary system exhibits an oscillation. The cyclic variation may be caused by the light-time effect via the presence of a third body or magnetic activity cycle. We calculated the corresponding period of the third body to be 14.1 +/- 1.4 years or magnetic cycle to be 12.2 +/- 0.7 years. We analyzed our new asymmetric light curves to obtain photometric solutions and starspot parameters using the Wilson and Devinney program. The final results show that V1044 Her is a contact binary system with a degree of contact factor f = 3.220(+/- 0.002)%. 

Funding ProjectJoint Fund of Astronomy of the National Natural Science Foundation of China ; Chinese Academy of Sciences[U1431114] ; Chinese Academy of Sciences[11263001] ; Joint Fund of Department of Science and Technology of Guizhou Province ; Guizou University[[2014]7642]
Funding OrganizationJoint Fund of Astronomy of the National Natural Science Foundation of China ; Chinese Academy of Sciences[U1431114, 11263001] ; Joint Fund of Department of Science and Technology of Guizhou Province ; Guizou University[[2014]7642]
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherELSEVIER SCIENCE BV
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
WOS IDWOS:000377819100010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCONTACT BINARY ; ORBITAL-PERIOD ; LIGHT-CURVE ; CLOSE BINARIES ; STAR LIGHT ; SYSTEM ; ANDROMEDAE ; CASSIOPEIAE ; MODULATION ; TAURI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9612
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Liyun
Affiliation1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.Department of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA
Recommended Citation
GB/T 7714
Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,et al. The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her[J]. NEW ASTRONOMY,2016,48:58-65.
APA Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,Pi, Qingfeng,&Wang, Daimei.(2016).The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her.NEW ASTRONOMY,48,58-65.
MLA Lu, Hongpeng,et al."The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her".NEW ASTRONOMY 48(2016):58-65.
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